Hourly Weather | Today › Friday, October 9, 2026
Stamford, Connecticut
5 AM
Night
52°
Feels Like 50°
0
Humidity: 78%
UV Index: 0
Wind: 7 mph
6 AM
Night
52°
Feels Like 50°
0
Humidity: 78%
UV Index: 0
Wind: 6 mph
7 AM
Sunny Weather
52°
Feels Like 48°
0
Humidity: 79%
UV Index: 0
Wind: 6 mph
8 AM
Cloudy Weather
54°
Feels Like 52°
0
Humidity: 73%
UV Index: 1
Wind: 7 mph
9 AM
Cloudy Weather
57°
Feels Like 57°
0
Humidity: 65%
UV Index: 1
Wind: 8 mph
10 AM
Cloudy Weather
63°
Feels Like 63°
0
Humidity: 59%
UV Index: 2
Wind: 9 mph
11 AM
Cloudy Weather
64°
Feels Like 64°
0
Humidity: 54%
UV Index: 3
Wind: 10 mph
12 PM
Cloudy Weather
66°
Feels Like 68°
0
Humidity: 48%
UV Index: 4
Wind: 12 mph
1 PM
Cloudy Weather
70°
Feels Like 72°
0
Humidity: 42%
UV Index: 4
Wind: 13 mph
2 PM
Cloudy Weather
72°
Feels Like 72°
0
Humidity: 39%
UV Index: 4
Wind: 13 mph
3 PM
Cloudy Weather
72°
Feels Like 72°
0
Humidity: 37%
UV Index: 3
Wind: 13 mph
4 PM
Cloudy Weather
72°
Feels Like 70°
0
Humidity: 38%
UV Index: 2
Wind: 13 mph
5 PM
Cloudy Weather
70°
Feels Like 66°
0
Humidity: 39%
UV Index: 1
Wind: 12 mph
6 PM
Cloudy Weather
66°
Feels Like 64°
0
Humidity: 42%
UV Index: 1
Wind: 10 mph
7 PM
Cloudy Night
64°
Feels Like 63°
0
Humidity: 48%
UV Index: 0
Wind: 8 mph
8 PM
Cloudy Night
61°
Feels Like 61°
0
Humidity: 54%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Night
59°
Feels Like 57°
0
Humidity: 58%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
59°
Feels Like 57°
0
Humidity: 60%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
57°
Feels Like 55°
0
Humidity: 61%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

5 AM
22 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.47 µg/m³
  • PM10: 6.37 µg/m³
  • O3: 0.024 ppm
  • NO2: 7.1 ppb
  • SO2: 0.8 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 AM
21 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.17 µg/m³
  • PM10: 6.01 µg/m³
  • O3: 0.023 ppm
  • NO2: 6.9 ppb
  • SO2: 0.8 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 AM
20 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.04 µg/m³
  • PM10: 6 µg/m³
  • O3: 0.022 ppm
  • NO2: 7.7 ppb
  • SO2: 0.9 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 AM
19 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.15 µg/m³
  • PM10: 6.32 µg/m³
  • O3: 0.020 ppm
  • NO2: 9.5 ppb
  • SO2: 0.9 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 AM
19 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.3 µg/m³
  • PM10: 6.67 µg/m³
  • O3: 0.020 ppm
  • NO2: 9.5 ppb
  • SO2: 1 ppb
  • CO: 0.20 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 AM
20 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.51 µg/m³
  • PM10: 7.07 µg/m³
  • O3: 0.021 ppm
  • NO2: 8.7 ppb
  • SO2: 1.2 ppb
  • CO: 0.21 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 AM
22 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.88 µg/m³
  • PM10: 7.56 µg/m³
  • O3: 0.024 ppm
  • NO2: 8.4 ppb
  • SO2: 1.5 ppb
  • CO: 0.21 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

12 PM
42 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.88 µg/m³
  • PM10: 5.35 µg/m³
  • O3: 0.045 ppm
  • NO2: 4.3 ppb
  • SO2: 1.8 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

1 PM
48 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.18 µg/m³
  • PM10: 5.33 µg/m³
  • O3: 0.052 ppm
  • NO2: 2.5 ppb
  • SO2: 1.5 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

2 PM
55 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.89 µg/m³
  • PM10: 5.98 µg/m³
  • O3: 0.056 ppm
  • NO2: 1.7 ppb
  • SO2: 1.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

3 PM
63 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.43 µg/m³
  • PM10: 6.5 µg/m³
  • O3: 0.058 ppm
  • NO2: 1.4 ppb
  • SO2: 1.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM
65 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.7 µg/m³
  • PM10: 6.77 µg/m³
  • O3: 0.059 ppm
  • NO2: 1.5 ppb
  • SO2: 1.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
60 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.57 µg/m³
  • PM10: 6.62 µg/m³
  • O3: 0.057 ppm
  • NO2: 2 ppb
  • SO2: 1.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM
50 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.26 µg/m³
  • PM10: 6.36 µg/m³
  • O3: 0.054 ppm
  • NO2: 3.4 ppb
  • SO2: 1.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 PM
44 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.05 µg/m³
  • PM10: 6.36 µg/m³
  • O3: 0.048 ppm
  • NO2: 5.5 ppb
  • SO2: 1.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 PM
39 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.81 µg/m³
  • PM10: 6.41 µg/m³
  • O3: 0.042 ppm
  • NO2: 7.3 ppb
  • SO2: 1.3 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM
32 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.81 µg/m³
  • PM10: 6.87 µg/m³
  • O3: 0.035 ppm
  • NO2: 9.5 ppb
  • SO2: 1.1 ppb
  • CO: 0.19 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM
25 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.15 µg/m³
  • PM10: 7.86 µg/m³
  • O3: 0.027 ppm
  • NO2: 12.1 ppb
  • SO2: 0.9 ppb
  • CO: 0.21 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
23 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.47 µg/m³
  • PM10: 8.74 µg/m³
  • O3: 0.021 ppm
  • NO2: 14.1 ppb
  • SO2: 0.7 ppb
  • CO: 0.23 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.